I believe the strategy is only 30% of the trading strategy and the rest can be split between how you protect yourself "the money management" and your experience about understanding the market
Yes it's still working, taking into account that you actually know what you are doing amd have the patience to wait for setups to start and complete before you enter a trade. W and M formations are almost always visible aftr the Asian session. See attached, todays EurUsd.
i saw this market maker method on youtube,i am new to trading but one of his videos on youtube was 4hrs and sat through it.I would say I learnt a lot as it made sense.